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Books by helen e. roy

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From Biological Control to...
Helen E. Roy, Eric Wajnberg
PaperBack
$435.99
  
(ebook) Ladybirds
John J. Sloggett, Helen E....
eBook
$34.50
  
(ebook) Ladybirds
John J. Sloggett, Helen E....
eBook
$34.50
  
(ebook) Ecology of Fungal...
Fernando E. Vega, Helen E....
eBook
$205.37
  
From Biological Control to...
Helen E. Roy, Eric Wajnberg
HardCover
$580.99
  
(ebook) From Biological...
Eric Wajnberg, Helen E. Roy
eBook
$171.00